Improvement in making nails



tzend? @time le t Letters Patent No. 88,454, dated March 30, 1869.

IMPROVEMENT IN MAKING NAILS.

The Schedule, referred to in these Letters Patent and making part of thesame.

To all whom it may conce/ra:

Be it known that I, J. MAsLIN Ooorneyfof Philadelphia, Pennsylvania,have invented an Improved Nail; and I do hereby declare the following tobe a full, clear, and exact description of the same.

My invention consists in the making. of cut-nails, with the sides allparallel, and the points bevelled from the rolledl sides, bycutting thenails from a plate bev elled at one' edge, to correspond to the bevel ofthe points ofthe nails, so that no turning of the plate, in feeding itto the machine, is required, and so that the nails produced may besuperior to ordinary cut-nails, as. regards easy penetration andpermanency of retention in place.

In order to enable others skilled in the art to make and apply myinvention, I will now proceed to describe its construction andoperation, reference being had to the accompanying drawing, which formsapart of this speciiication, and in which- Figure l' is a perspectiveview of my improved nail.

Figure 2, also a perspective view, showing the position of the nail inrespect to the grain of the wood, prior to driving.

Figure 3 is a view of the cut side ofthe nail;

Figure 4, a view of the rolled side; and

Figure 5, a modification.

The rolled sides 'ol' an'ordinary cnt-nail are parallel, while its cutsides are inclined, so as to render the nail Wedge-shaped, and taperingtoward the point, which taper, while it acilitatesthe introduction ofthe point in driving the nail, causes the resistance-to constantly lincrease as the nail penetrates the wood.`

Another objection to this form of nail is, that in orderl to taper itssides, the plates, when fed to the machine, must be turned for eachnail, so as to present opposite faces alternately to the action of theshears.

This renders the feeding of the machine, if performed by hand,laborious, and comparatively slow, while, if machinery be employed, itmust necessarily, owing to the variety of motions demanded, be of a mostcomplicated character.

My improved nail (plainly illustrated in tig. 1) has its cut sides cparallel to each other, and its rolled sides b,which are also parallel,are bevelled at the end, and thcrebyreduced to the chisel-shape shown.

The mode of making Jthis nail is as follows:

The plates are tir'st, previous to being fed to the nail-machine, passedbetween beve-lied rolls, which ineline them upon both sides of one edge,at a proper angle to give the desired chisel-shaped point to the nails.

After being thus bevelled, the plates are fed to the machine straight,and without turning, between the successive clips, and, consequently,the cut sides of the nail being parallelto each other, the head, andthat portion of the nail adjacent to it, are` formed in the ordinarymanner and by the usual machinery.

The manner of adjust-ing the nail for drivingis the reverse of thatresorted to with ordinary nails, the cut sides being placed parallelwith the grain of the wood, and the rolled sides across it; thewedge-shaped point, consequently, penetrates into the wood across itsgrain, and has no tendency to split. (See o'. 2.)

After-.the point has penetrated, the nail can be driven home withcomparative ease, as there are no tapering sides to increase theresist-ance as the nail enters the wood.

; The ordinary nail, when driven home, and accidentally` started fromits place, has, by reason of its ta pering sides, aconstantly-increasing tendency to draw out or become loose; while myimproved nail, even if started, will still hold, as all its sides arestraight and parallel.

Another advantage of my nail is the facility of its manufacture, for, asit is unnecessary to turn the plates in feeding them to thenail-machine, the operation, if performed by hand, will be much more'rapid and less laborious than the old method, while it will be evident.,as the drawing back and-turning ofthe plate are dispensed with, thatmachinery of a most simple character can be adapted to the work.

In the modiiication of my invention, shown in fig. 5, the point of thenail is formed, as will be readily understood, by bevelliini the edge ofthe plate upon one side only, instead of Both.

I clailn as my invention, and desire to secure by Letters Patent p As animproved method of making improved cntnails, cutting the same of equalbreadth from end to end, of a plate of equal thickness, but of which anedge is bevelled on opposite sides, as described.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

J. MASLIN COOPER.

, lVitnesses z W. W. DOUGHERTY, VHanny SMITH.

